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4+n/5=25
We move all terms to the left:
4+n/5-(25)=0
We add all the numbers together, and all the variables
n/5-21=0
We multiply all the terms by the denominator
n-21*5=0
We add all the numbers together, and all the variables
n-105=0
We move all terms containing n to the left, all other terms to the right
n=105
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